Answers

2016-01-07T20:12:34+05:30
if there is any sudden growth in population it can be understood that there is migration from other countries
a sudden decrease in population would mean that there may be health problems in the country
....sorry but i know these two reasons
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2016-01-07T23:14:37+05:30
It is important for a country to know about its population because;
-to know the amount of literate people
-to know whether the population rise is decreasing or increasing even more
-to make policies that will be beneficent for the nation as a whole 
-to know at what rate the wealth of the nation is getting consumed
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